Impeovement in spieal feiction clutch foe machinery



citen taies. @anni @High IMPROVEMENT IN SPIRAL IRIGTION GLUTGH FOR MACHINERY.

felge-Simula trium tu in time ettm ndert z'mrmzring giri uf ik same.

T0 ALL WHM' IT MAY CON CERN:

VBe it known that I, JAMES HANLEY,.of No. 12, Sixth Avenue, in the city and State of New York, have invented and made a new and improved device to control and direct the motion of crank and other axles, which I call'a Friction Clutch; .the principle of which is a spiral coil surrounding the axle, and one mode of carrying it into operation will be seen and understood by reference tothe accompanying drawing, and the letters of reference marked thereon.

Securing one 'end of a piece of catgut to the framework of the machine, as seen at A, in the drawing, I pass' it round the crank-axle, B, spiral-ly several times, and fasten the other end of the catgut to an elastic cord, C, also secured to the framework, and operating as a spring, with only just suicient tension upon it to keep the coiled part in easy contact with the axle. Allittle rosin applied to the catgut, surrounding the axle,'increases the necessary friction. Thus arranged, the crank will only turn in one'direction, that in which the cord, A B

C, draws upon the elastic end, C, which yielding immediately, the coil keeps slack, and will not tighten. On ltrying to reverse the motion, the coil instantly tightens upon the' crank-shaft with a grip like the closing of the hand, thus preventing any motion in that direction.

I claim the friction cord, Yas herein described and applied, substantially, to control the movement of machines.

JAMES HANLEY;

Witnesses:

DANIEL L.`.J ONES, WILLIAM H. KIRK` 

